<!DOCTYPE html>
<html>
<head>
  <meta name="author" title="Luke Warlow" href="mailto:lwarlow@igalia.com">
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
  <script src="support/helper.sub.js"></script>

  <meta http-equiv="Content-Security-Policy" content="require-trusted-types-for 'script';">
</head>
<body>
<script>
  test(t => {
    let p = createHTML_policy(window, 1);
    let html = p.createHTML(INPUTS.HTML);
    let doc = Document.parseHTMLUnsafe(html);
    assert_equals(doc.body.innerText, RESULTS.HTML);
  }, "Document.parseHTMLUnsafe assigned via policy (successful HTML transformation).");

  // String assignments throw.
  test(t => {
    assert_throws_js(TypeError, _ => {
      var doc = Document.parseHTMLUnsafe("Fail");
    });
  }, "`Document.parseHTMLUnsafe(string)` throws.");

  // Null assignment throws.
  test(t => {
    assert_throws_js(TypeError, _ => {
      var doc = Document.parseHTMLUnsafe(null);
    });
  }, "'Document.parseHTMLUnsafe(null)' throws");

  // After default policy creation string assignment implicitly calls createHTML.
  test(t => {
    let p = window.trustedTypes.createPolicy("default", { createHTML: createHTMLJS }, true);
    let doc = Document.parseHTMLUnsafe(INPUTS.HTML);
    assert_equals(doc.body.innerText, RESULTS.HTML);
  }, "'Document.parseHTMLUnsafe(string)' assigned via default policy (successful HTML transformation).");

  // After default policy creation null assignment implicitly calls createHTML.
  test(t => {
    var doc = Document.parseHTMLUnsafe(null);
    assert_equals(doc.body.innerText, "null");
  }, "'Document.parseHTMLUnsafe(null)' assigned via default policy does not throw");
</script>
</body>
</html>
